The reading and the speaker discuss the difficulty to control zebra mussel from its spreading out from its original habitats to North America from different perspectives. The speaker casts doubt on the claims made in the article. He thinks that three ideas, which the author of the reading has mentioned to support his idea are unconvincing.
First of all, the author of the reading point out that zebra cannot be controlled because it is carried to new habitats along the ships of Europe's waterways. This point is challenged by the speaker. He restates the fact that in the past people did not have enough knowledge to control the invasion of the zebra mussel. But now they probably can stop the invasion of the zebra mussel by emptying the ships in the ocean; therefore, salt water will kill the zebra mussel.
Secondly, the author of the reading contends that once the zebra brought to new habitats it will dominate those places because it has no predator. The speaker rebuts this idea by arguing that in the beginning the zebra mussels had no predator. However, now birds recognize that zebra mussel is a good food. They start to eat the zebra mussel. Thus, the zebra mussel cannot be dominated in those locations.
Finally, the author of the reading states that the zebra mussel causes the deterioration of overall fish population in those places that they are dominant. The speaker, on the other hand, opposes this point by saying that it is true that the zebra negatively impact on some kinds of fish. Nevertheless, there are some fishes in the bottom of the ocean can increase their populations base on the zebra mussel.
Transition Words or Phrases used:
but, finally, first, however, if, nevertheless, second, secondly, so, therefore, thus, first of all, it is true, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 9.0 10.4613686534 86% => OK
Auxiliary verbs: 6.0 5.04856512141 119% => OK
Conjunction : 2.0 7.30242825607 27% => More conjunction wanted.
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 29.0 22.412803532 129% => Less pronouns wanted
Preposition: 40.0 30.3222958057 132% => OK
Nominalization: 2.0 5.01324503311 40% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1360.0 1373.03311258 99% => OK
No of words: 280.0 270.72406181 103% => OK
Chars per words: 4.85714285714 5.08290768461 96% => OK
Fourth root words length: 4.09062348924 4.04702891845 101% => OK
Word Length SD: 2.43602846738 2.5805825403 94% => OK
Unique words: 138.0 145.348785872 95% => More unique words wanted.
Unique words percentage: 0.492857142857 0.540411800872 91% => More unique words wanted or less content wanted.
syllable_count: 413.1 419.366225166 99% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 44.1434026781 49.2860985944 90% => OK
Chars per sentence: 90.6666666667 110.228320801 82% => OK
Words per sentence: 18.6666666667 21.698381199 86% => OK
Discourse Markers: 8.66666666667 7.06452816374 123% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.487857510114 0.272083759551 179% => OK
Sentence topic coherence: 0.175196719333 0.0996497079465 176% => OK
Sentence topic coherence SD: 0.107036285538 0.0662205650399 162% => OK
Paragraph topic coherence: 0.303781420426 0.162205337803 187% => OK
Paragraph topic coherence SD: 0.065817137805 0.0443174109184 149% => OK
Essay readability:
automated_readability_index: 10.8 13.3589403974 81% => Automated_readability_index is low.
flesch_reading_ease: 61.67 53.8541721854 115% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.1 11.0289183223 83% => OK
coleman_liau_index: 10.91 12.2367328918 89% => OK
dale_chall_readability_score: 7.63 8.42419426049 91% => OK
difficult_words: 55.0 63.6247240618 86% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
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Rates: 73.3333333333 out of 100
Scores by essay e-grader: 22.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.